Struct rustc_expand::expand::MacroExpander

pub struct MacroExpander<'a, 'b> {
    pub cx: &'a mut ExtCtxt<'b>,
    monotonic: bool,
}

Fields

cx: &'a mut ExtCtxt<'b>

monotonic: bool

Implementations

impl<'a, 'b> MacroExpander<'a, 'b>

pub fn new(cx: &'a mut ExtCtxt<'b>, monotonic: bool) -> Self

pub fn expand_crate(&mut self, krate: Crate) -> Crate

pub fn fully_expand_fragment( &mut self, input_fragment: AstFragment ) -> AstFragment

Recursively expand all macro invocations in this AST fragment.

fn resolve_imports(&mut self)

fn collect_invocations( &mut self, fragment: AstFragment, extra_placeholders: &[NodeId] ) -> (AstFragment, Vec<(Invocation, Option<Lrc<SyntaxExtension>>)>)

Collects all macro invocations reachable at this time in this AST fragment, and replace them with “placeholders” - dummy macro invocations with specially crafted NodeIds. Then call into resolver that builds a skeleton (“reduced graph”) of the fragment and prepares data for resolving paths of macro invocations.

fn error_recursion_limit_reached(&mut self)

fn error_wrong_fragment_kind( &mut self, kind: AstFragmentKind, mac: &MacCall, span: Span )

A macro’s expansion does not fit in this fragment kind. For example, a non-type macro in a type position.

fn expand_invoc( &mut self, invoc: Invocation, ext: &SyntaxExtensionKind ) -> ExpandResult<AstFragment, Invocation>

fn gate_proc_macro_attr_item(&self, span: Span, item: &Annotatable)

fn gate_proc_macro_input(&self, annotatable: &Annotatable)

fn parse_ast_fragment( &mut self, toks: TokenStream, kind: AstFragmentKind, path: &Path, span: Span ) -> AstFragment

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes